US7424855B2 - Slide arrangement - Google Patents

Slide arrangement Download PDF

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Publication number
US7424855B2
US7424855B2 US11/734,739 US73473907A US7424855B2 US 7424855 B2 US7424855 B2 US 7424855B2 US 73473907 A US73473907 A US 73473907A US 7424855 B2 US7424855 B2 US 7424855B2
Authority
US
United States
Prior art keywords
housing
closure member
slide plate
slide
shroud
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US11/734,739
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English (en)
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US20070241300A1 (en
Inventor
Volker von Erichsen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
A Friedrich Flender AG
Original Assignee
A Friedrich Flender AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by A Friedrich Flender AG filed Critical A Friedrich Flender AG
Assigned to NEM POWER SYSTEMS NIEDERLASSUNG reassignment NEM POWER SYSTEMS NIEDERLASSUNG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: VON ERICHSEN, VOLKER
Publication of US20070241300A1 publication Critical patent/US20070241300A1/en
Application granted granted Critical
Publication of US7424855B2 publication Critical patent/US7424855B2/en
Assigned to SIEMENS AKTIENGESELLSCHAFT reassignment SIEMENS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NEM POWER-SYSTEMS
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
    • F16K1/2007—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member specially adapted operating means therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
    • F16K1/2042—Special features or arrangements of the sealing
    • F16K1/205—Special features or arrangements of the sealing the sealing being arranged on the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0263—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor using particular material or covering means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0281—Guillotine or blade-type valves, e.g. no passage through the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/10—Supply line fittings
    • F23K2203/102—Flashback safety, e.g. inertizing devices

Definitions

  • the present invention relates to a slide arrangement for blocking or closing off a channel that is disposed between a coal pulverizer and coal dust burners, and which guides or conveys a gas having a high proportion of coal dust.
  • a coal dust/gas mixture having a very high coal dust content of 1,000 g/m 3 or more is conveyed in the discharge conduit that leads from the coal pulverizer to the coal dust burners. Due to official regulations, for example the accident prevention regulations, for safety reasons two successively arranged blocking or shut-off means are provided in the discharge conduit, one of which is generally designed as a slide.
  • FIG. 1 shows one exemplary slide arrangement pursuant to the present application in the open position and with the closure member closed;
  • FIG. 2 shows the slide arrangement of FIG. 1 at the start of the closure process, whereby the closure member is slightly opened;
  • FIG. 3 shows the slide arrangement of FIG. 1 during the introduction, whereby the closure member is entirely opened
  • FIG. 4 shows the slide arrangement of FIG. 1 in the closed position
  • FIG. 5 is an enlarged view of the cover and the knee lever linkage as a portion of the arrangement of FIG. 1 ;
  • FIG. 6 is an enlarged view of the cleaning mechanism of the slide arrangement of a portion of the arrangement of FIG. 1 ;
  • FIG. 7 shows the shroud of the slide arrangement of FIG. 1 in the separated state.
  • the slide arrangement of the present application includes a housing that is disposed in a wall of the channels and a shroud or steel structure that is laterally connected to the housing, whereby a passage for a slide plate is provided in a wall of the housing that faces the shroud or steel structure, the passage can be closed off by a closure member with the exception of a narrow gap, and the closure member is provided with a circumferential seal and a wear plate, wherein the circumferential seal rests against the rearward side of the wall of the housing, and the wear plate is flush with the inner side of the wall and forms a smooth passageway.
  • the smooth passageway of the housing serves to reduce the wear, since components that are subjected to wear due to the gas that is heavily laden with coal dust, which can lead to caking due to turbulence, are eliminated.
  • the closing-off of the passage by the automatically closing cover that closes itself and is open toward the extension side of the slide, and which has a circumferential seal, precludes penetration of dust and moisture into the shroud or the surrounding area to a substantial extent.
  • the opening of the cover by the slide plate as it extends into the housing via the knee lever linkage enables a straightforward and sturdy manner of construction of the slide arrangement.
  • the closure mechanism comprised of the cover and the knee lever linkage can, just like the housing, be designed to be resistant to pressure or one bar explosion pressure, which corresponds to ten times the operating pressure in the chamber.
  • a housing 1 of a slide arrangement is disposed in a preferably right-angled channel 16 that represents the discharge conduit between a coal pulverizer and coal dust burners.
  • a wall 1 a of the housing 1 is made of a thick material that is resistant to wear ( FIG. 5 ).
  • a passage 1 b is provided in the wall 1 a of the housing 1 .
  • a plate 4 b is placed upon the closure member 4 to fill the passage 1 b ; the plate 4 b is made of the same wear-resistant material as is the wall 1 a of the housing 1 .
  • the plate 4 b On the inner side of the housing 1 , the plate 4 b , when it is in position, is flush with the wall 1 a of the housing. In this manner, a smooth passageway of the housing 1 is produced.
  • the closure member 4 is provided all the way around the plate 4 b with a circumferential seal 4 a that fills the gap between the closure member 4 and the wall 1 a of the housing 1 and prevents dust from escaping. Dust particles can deposit only in a narrow residual gap 4 c.
  • the housing 1 On that side facing away from the channel 16 , the housing 1 is connected to a shroud 2 or a steel structure for accommodating a slide plate 3 and an arresting or securing mechanism of the closure member 4 .
  • the closure member 4 Within the shroud 2 or steel structure, the closure member 4 , above its center of gravity, is suspended so as to be able to swing or pivot in a hinged joint 4 d mounted on the back side of the wall 1 a of the housing 1 , so that the closure member 4 closes the passage 1 b under its own weight.
  • the closure effect is enhanced by an externally disposed closing spring 14 or some other closure element, such as a closure weight or a gas spring, that acts on the closure member 4 via a knee lever linkage 5 d , 5 e.
  • the cover/closure mechanism 5 comprises a shaft 5 c that is mounted at both sides on the outside on the shroud 2 or steel structure; and has the outer levers 5 d , the inner levers 5 e and the connecting or pusher rods 5 f .
  • the outer levers 5 d By means of the outer levers 5 d , a closure moment is produced by the springs that are secured to the shroud 2 or steel structure, and are under tension; the closure moment is transferred to the closure member 4 via the inner levers 5 e and the pusher rods 5 f .
  • the knee lever linkage 5 d , 5 e moves into the extended position, and hence into an automatic holding position, as a result of which the closure member 4 is firmly pressed against the wall 1 a of the housing 1 .
  • an explosion pressure that can possibly result in the channel 16 can be readily absorbed.
  • the closure elements springs weights or gas springs—can be disposed on one side, or on both sides.
  • the slide plate 3 In the open position of the slide arrangement shown in FIG. 1 the slide plate 3 is in the shroud 2 or steel structure.
  • the slide plate 3 is supported within the shroud 2 or steel structure on maintenance-free guide rollers 135 and is driven by a drive shaft or pin gear 6 that is disposed on the underside of the slide plate 3 S as a result of which no deposits are possible that could hinder operation.
  • a single pin gear 6 is provided and is disposed in the middle, whereas for larger and wider slide plates 3 pin gears are disposed on both sides.
  • the pin gear shaft is actuated with a handwheel via a self-locking gear mechanism.
  • a manual remote operation via a sprocket and chain or via a universal coupling shaft and handwheel can be provided.
  • a fully automatic operation with electric motors is, of course, also possible.
  • the use of pneumatic or hydraulic motors even permits an emergency operation upon the loss of energy via compressed-air tanks bottled gas, or blower tanks.
  • the slide plate 3 has a surface equivalent sealing of 98-99%, whereas special designs having additional sealing sheets achieve values of up to 99.95%.
  • the slide plate 3 By means of the drive shaft or pin gear 6 , the slide plate 3 is moved out of the rest position into the housing 1 to block or close off the channel 16 . Within the housing 1 , the slide plate 3 is guided by replaceable, highly wear-resistant guide bolts 15 . The position of the slide plate 3 is signaled by inductive limit switches 11 that are actuated by the extending slide plate 3 .
  • a roller 5 b is mounted on the second lever 5 e of the knee lever linkage 5 d , 5 e between the pivot joint and the point of coupling to the closure member 4 .
  • the roller 5 b of the second lever 5 e is in front of the end face of the slide plate 3 ( FIGS. 1 and 5 ).
  • the extending slide plate 3 presses against the roller 5 b and raises the knee lever linkage 5 d , 5 e , as a result of which at the same time the closing spring 14 or some other closure element, is pretensioned.
  • the closure member 4 is first slightly opened ( FIG. 2 ) and then entirely opened ( FIG. 3 ), and the passage 1 b is uncovered or opened.
  • the slide plate 3 is extended to such an extent that it completely closes off the housing 1 that is disposed in the channel 16 ( FIG. 4 ).
  • a row of compressed air nozzles 10 can be provided, the jets of which are directed against the slide plate 3 ( FIG. 6 ). These jets blow coal dust that might have fallen onto the retracting or extending slide plate 3 back into the housing 1 .
  • the compressed air nozzles 10 are opened only during the operation of the slide plate 3 .
  • the shroud 2 has a funnel-shaped widened portion 7 , which is closed off by a maintenance and inspection cover 8 .
  • the funnel-shaped widened portion 7 makes it possible on the one hand, even during operation, to observe the closure member 4 , the knee lever linkage 5 d , 5 e and the pin gear 6 .
  • the funnel-shaped widened portion 7 is provided with openings 9 on both sides that permit a manual or automatic drainage of moisture and/or a cleaning (see, for example FIG. 1 ).
  • the shroud 2 On the side facing away from the knee lever linkage 5 d , 5 e , the shroud 2 is provided with a parting line 12 that extends perpendicular or transverse to the slide plate 3 and as a result of which a shroud part that is welded to the housing 1 is formed and a shroud part that is screwed on is formed.
  • a disabling device 5 a disposed on both sides of the knee lever linkage 5 d , 5 e of the closure member 4 even permits such work during operation of the pulverizer (see FIG. 7 ).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cleaning In General (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Massaging Devices (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Disintegrating Or Milling (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
  • Sliding Valves (AREA)
  • Lock And Its Accessories (AREA)
  • Compressor (AREA)
  • Mechanically-Actuated Valves (AREA)
US11/734,739 2006-04-13 2007-04-12 Slide arrangement Expired - Fee Related US7424855B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006017832.7 2006-04-13
DE102006017832A DE102006017832A1 (de) 2006-04-13 2006-04-13 Schieberanordnung

Publications (2)

Publication Number Publication Date
US20070241300A1 US20070241300A1 (en) 2007-10-18
US7424855B2 true US7424855B2 (en) 2008-09-16

Family

ID=38229353

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/734,739 Expired - Fee Related US7424855B2 (en) 2006-04-13 2007-04-12 Slide arrangement

Country Status (5)

Country Link
US (1) US7424855B2 (de)
EP (1) EP1845292B1 (de)
AT (1) ATE466221T1 (de)
DE (2) DE102006017832A1 (de)
ES (1) ES2343207T3 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2394382B1 (es) * 2009-06-10 2013-12-05 Ambiensys, S.L Dispositivo para regular el paso de materiales a un recinto o conducto, y sistema y aparato que comprenden dicho dispositivo.
DE102018129551A1 (de) * 2018-11-23 2020-05-28 Vat Holding Ag Ventil

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE246603C (de)
US3722857A (en) 1971-04-19 1973-03-27 C Townsend Gate valve
US3985262A (en) 1974-10-11 1976-10-12 Nautamix Patent A.G. Vessel provided with a recessed locking lid
US5261576A (en) * 1992-02-19 1993-11-16 Atlantic Richfield Company Seal for coal loading chute gate
DE4243684A1 (de) 1992-12-18 1994-06-23 Ver Energiewerke Ag Absperrschieber für einen Rauchgasrücksaugkanal
US6260490B1 (en) * 2000-02-16 2001-07-17 Sure Alloy Steel Corporation Burner isolation valve for pulverized fuel systems

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1402181A (en) * 1920-09-27 1922-01-03 Wellman Seaver Morgan Co Valve
US3557822A (en) * 1969-05-08 1971-01-26 Clyde H Chronister Gate valve
US4334550A (en) * 1975-12-10 1982-06-15 Mosser Industries, Inc. Sealing means for sliding gate valve
JPS58149488A (ja) * 1982-03-02 1983-09-05 Maruman Kogyo Kk 不断水補修仕切弁
DD246603A1 (de) * 1986-03-14 1987-06-10 Luebbenau Vetschau Kraftwerke Druckfester absperrschieber
US6883776B2 (en) * 2002-08-20 2005-04-26 Asm America, Inc. Slit valve for a semiconductor processing system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE246603C (de)
US3722857A (en) 1971-04-19 1973-03-27 C Townsend Gate valve
US3985262A (en) 1974-10-11 1976-10-12 Nautamix Patent A.G. Vessel provided with a recessed locking lid
US5261576A (en) * 1992-02-19 1993-11-16 Atlantic Richfield Company Seal for coal loading chute gate
DE4243684A1 (de) 1992-12-18 1994-06-23 Ver Energiewerke Ag Absperrschieber für einen Rauchgasrücksaugkanal
US6260490B1 (en) * 2000-02-16 2001-07-17 Sure Alloy Steel Corporation Burner isolation valve for pulverized fuel systems

Also Published As

Publication number Publication date
ES2343207T3 (es) 2010-07-26
DE102006017832A1 (de) 2007-10-18
ATE466221T1 (de) 2010-05-15
EP1845292A2 (de) 2007-10-17
US20070241300A1 (en) 2007-10-18
EP1845292B1 (de) 2010-04-28
DE502007003561D1 (de) 2010-06-10
EP1845292A3 (de) 2009-06-17

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